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dc.contributor.authorThabet, Ali A.  Concept link
dc.contributor.authorMaas, Amy E.  Concept link
dc.contributor.authorLawson, Gareth L.  Concept link
dc.contributor.authorTarrant, Ann M.  Concept link
dc.date.accessioned2015-12-03T19:30:08Z
dc.date.available2016-10-23T09:04:51Z
dc.date.issued2015-10
dc.identifier.urihttps://hdl.handle.net/1912/7665
dc.descriptionAuthor Posting. © The Author(s), 2015. This is the author's version of the work. It is posted here by permission of Springer for personal use, not for redistribution. The definitive version was published in Marine Biology 162 (2015): 2235-2249, doi:10.1007/s00227-015-2754-1.en_US
dc.description.abstractThecosome pteropods are pelagic molluscs with aragonitic shells. They are considered to be especially vulnerable among plankton to ocean acidification (OA), but to recognize changes due to anthropogenic forcing a baseline understanding of their life history is needed. In the present study, adult Limacina retroversa were collected on five cruises from multiple sites in the Gulf of Maine (between 42° 22.1’–42° 0.0’ N and 69° 42.6’–70° 15.4’ W; water depths of ca. 45–260 m) from October 2013−November 2014. They were maintained in the laboratory under continuous light at 8° C. There was evidence of year-round reproduction and an individual life span in the laboratory of 6 months. Eggs laid in captivity were observed throughout development. Hatching occurred after 3 days, the veliger stage was reached after 6−7 days, and metamorphosis to the juvenile stage was after ~ 1 month. Reproductive individuals were first observed after 3 months. Calcein staining of embryos revealed calcium storage beginning in the late gastrula stage. Staining was observed in the shell gland, shell field, mantle, and shell margin in later stages. Exposure of two batches of larvae at the gastrula stage to elevated CO2 levels (800 and 1200 ppm) resulted in significantly increased mortality in comparison with individuals raised under ambient (~400 ppm) conditions and a developmental delay in the 1200 ppm treatment compared with the ambient and 800 ppm treatments.en_US
dc.description.sponsorshipA. Thabet is grateful for a fellowship from the Egyptian Culture and Education Bureau and for mentoring from Drs. S.A. Saber, M.M. Sarhan and M.M. Fouda. Funding for this research was provided by a National Science Foundation grant to Lawson, Maas, and Tarrant (OCE-1316040). Additional support for field sampling was provided by the WHOI Coastal Ocean Institute and Pickman Foundation to Wang, Maas, and Lawson.en_US
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen_US
dc.relation.urihttps://doi.org/10.1007/s00227-015-2754-1
dc.subjectMolluscen_US
dc.subjectOcean acidificationen_US
dc.subjectCalcificationen_US
dc.subjectMortalityen_US
dc.subjectDevelopmental delayen_US
dc.titleLife cycle and early development of the thecosomatous pteropod Limacina retroversa in the Gulf of Maine, including the effect of elevated CO2 levelsen_US
dc.typePreprinten_US
dc.description.embargo2016-10-23en_US


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